ArticleTAG. Theoretical and applied genetics. Theoretische und angewandte Genetik2007
Fine mapping and allelic dosage effect of Hwc1, a complementary hybrid weakness gene in rice.
Article in TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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18 citing papers in PubMed, 37 citations in OpenAlex.
- Transcriptome Analyses Indicate Significant Association of Increased Non-Additive and Allele-Specific Gene Expression with Hybrid Weakness in Rice (Life (Basel, Switzerland) · 2022Article
- New Hybrid Spikelet Sterility Gene Found in Interspecific Cross betweenPlants (Basel, Switzerland) · 2022Article
- A Novel Combination of Genes Causing Temperature-Sensitive Hybrid Weakness in Rice.Frontiers in plant science · 2022Article
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- Temperature-dependent sugar accumulation in interspecific Capsicum FJournal of plant research · 2021Article
- Fine mapping of Ne1, the hybrid necrosis gene complementary to Ne2 in common wheat (Triticum aestivum L.).TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2021Article
- A Novel Embryo Phenotype Associated With Interspecific Hybrid Weakness in Rice Is Controlled by the MADS-Domain Transcription FactorFrontiers in plant science · 2021Article
- Substitution Mapping of a Locus Responsible for Hybrid Breakdown in Populations Derived From Interspecific Introgression Line.Frontiers in plant science · 2021Article
- Hybrid Incompatibility of the Plant Immune System: An Opposite Force to Heterosis Equilibrating Hybrid Performances.Frontiers in plant science · 2020Review
- Nicotiana suaveolens accessions with different ploidy levels exhibit different reproductive isolation mechanisms in interspecific crosses with Nicotiana tabacum.Journal of plant research · 2019Article
- A novel discovery of a long terminal repeat retrotransposon-induced hybrid weakness in rice.Journal of experimental botany · 2019Article
- An overview on reproductive isolation inAoB PLANTS · 2018Review
- Genetic differentiation revealed by selective loci of drought-responding EST-SSRs between upland and lowland rice in China.PloS one · 2014Article
- Genetic mechanisms of postzygotic reproductive isolation: An epistatic network in rice.Breeding science · 2013Review
- Genetic and cytological analysis of a novel type of low temperature-dependent intrasubspecific hybrid weakness in rice.PloS one · 2013Article
- Chromosomal Location of HCA1 and HCA2, Hybrid Chlorosis Genes in Rice.International journal of plant genomics · 2012Article
- Seven of eight species in Nicotiana section Suaveolentes have common factors leading to hybrid lethality in crosses with Nicotiana tabacum.Annals of botany · 2010Article
- Interaction of novel Dobzhansky-Muller type genes for the induction of hybrid lethality between Gossypium hirsutum and G. barbadense cv. Coastland R4-4.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2009Article
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Authors and funding
9 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Hybrid weakness is a reproductive barrier that is found in many plant species. In rice, the hybrid weakness caused by two complementary genes, Hwc1 and Hwc2, has been surveyed intensively. However, their gene products and the molecular mechanism that causes hybrid weakness have remained unknown. We performed linkage analyses of Hwc1, narrowed down the area of interest to 60 kb, and identified eight candidate genes. In the F(2) population, in which both Hwc1 and Hwc2 genes were segregated, plants were separable into four classes according to their respective phenotypes: severe type, semi-severe type, F(1) type, and normal type. Severe type plants show such severe symptoms that they could produce only tiny shoot-like structures; they were unable to generate roots. Genetic analyses using closely linked DNA markers of the two genes showed that the symptoms of the F(2) plants were explainable by the genotypes of Hwc1 and Hwc2. Weakness was observed in plants that have both Hwc1 and Hwc2. In Hwc1 homozygote, the symptoms worsened and severe type or semi-severe type plants appeared. Consequently, Hwc1 should have a gene dosage effect and be a semi-dominant gene. The dosage effect of Hwc2 was recognizable, but it was not so severe as that in Hwc1. These results are useful to elucidate the mechanism that causes the hybrid weakness phenomenon and the role of each causal gene in hybrid weakness.
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